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Finding the Fourth Proportional to 258,196.94, 356,304.65 and 143,472.62

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Solution

The fourth proportional to 258,196.94, 356,304.65 and 143,472.62 is: 197,988.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,196.94 : 356,304.65 = 143,472.62 : x
  2. Step 2: Convert to fraction form
    258,196.94/356,304.65 = 143,472.62/x
  3. Step 3: Cross multiply
    258,196.94x = 356,304.65 × 143,472.62
  4. Step 4: Simplify right side
    258,196.94x = 51,119,960,226.38
  5. Step 5: Solve for x
    x = 51,119,960,226.38/258,196.94
  6. Step 6: Final answer
    x = 197,988.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.